What is CLT?

Cross laminated timber

CLT surface qualities




Industry view


Living View


Branch-free visibility

Advantages of CLT

45% shorter construction time

.... rent earlier

... previous sale .... saves costs on the construction site ... shorter financing times

3% more lettable area

.... by the same

The timber construction has lower wall thicknesses due to the

2/3 less weight

.... This saves costs at

the foundation and dimensioning of the floor slab .... for the lifting tools

7 x fewer truck journeys

For an eight-storey residential building in timber construction

Decidedly fewer transports of building materials are required than with a conventional construction method.

Source: Housing in wood, arguments and built examples, proHolz Austria, September 2018

CLT / cross laminated timber
made from glued boards
Prefabricated exterior wall
CLT, plasterboard inside, windows installed in the factory
of the CLT elements
Crane assembly
of the elements on the construction site
Screw connection
of the CLT elements on the construction site
Previous slide
Next slide

What is CLT / cross laminated timber?

CLT is also called "Cross Laminated Timber". The building material, which is also called cross laminated timber, is made of cross-laminated boards. The sustainable, solid boards are used as prefabricated parts for solid wood walls and solid wood ceilings of wooden houses. They can also be used for so-called wood-concrete composite ceilings.

Leidorf Holztechnik specialises in the processing of cross laminated timber / CLT. We bind more than 100,000 square metres of CLT for our customers every year.

CLT - a highly modern and sustainable building material

Cross Laminated Timber (CLT) is a revolutionary building material that has transformed the construction industry with its exceptional properties and versatile applications. Also known as cross laminated timber, CLT is an innovative timber construction in which multiple layers of timber are cross-glued together to create strong, durable and extremely resilient panels.

The production of CLT begins with the selection of high-quality wood slats. These slats are glued together in an overlapping arrangement, with the grain direction of the layers at right angles to each other. This cross-layer pattern gives CLT its impressive strength and load-bearing capacity in two main axes. The panels can be manufactured in different thicknesses depending on project requirements, allowing for a wide range of construction projects.

One of the most remarkable advantages of CLT is its sustainability. The material uses wood, a renewable resource, and helps reduce the ecological footprint. The use of sustainably managed wood ensures that for every wood plant felled, a new tree is planted to maintain the stocks. Furthermore, as a natural carbon reservoir, wood binds CO2 throughout its lifetime.

The exceptional strength of CLT enables a wide range of construction applications. It can be used for load-bearing structural elements such as walls, ceilings, floors, beams and columns. The stability and rigidity of CLT also makes it ideal for the construction of multi-storey buildings, including homes, office buildings, educational institutions and public buildings. In addition, CLT is also suitable for modular construction and prefabrication due to its fast assembly and precision.

Another remarkable feature of CLT is its excellent thermal insulation. The natural cell structure of the wood provides good thermal properties that contribute to the energy efficiency of buildings. This can lead to lower energy costs and increased comfort for the occupants.

The aesthetics of CLT are also remarkable. The visible wood structure gives the interiors a warm and inviting atmosphere, which contributes to a pleasant feeling of space. This makes CLT not only a technically advanced building material, but also a choice for architecturally appealing designs.

The use of CLT also opens up new perspectives for urban timber construction. Traditionally, wood has been used mainly in single-family house construction, but thanks to advances in wood construction technologies and standards, wood is also gaining importance in multi-storey and even high-rise urban construction. CLT plays a crucial role in this development, as it helps to increase the flexibility and speed of construction without sacrificing sustainability and aesthetics.

Overall, CLT has fundamentally changed the way we build. With its exceptional strength, sustainability, versatility and aesthetic appeal, CLT has established itself as a central element of modern construction. It enables the combination of technical innovation with environmental responsibility and design excellence, making it a fascinating and promising building material for the present and the future.